Includes a lever operated stitch length mechanism with a reverse feed regulator for back tacking and stitching in reverse. Some additional features of the 335 B include a semi-automatic lubrication system, a synchronized binder mechanism (folder optional) and the machine sews thread from as small as size z-46 up to a large diameter size of z-207 in the needle with up to a maximum size of z-138 in the bobbin. All types of leathers or fabrics as light as a sheet or two of paper and up to just over3⁄8" thick of leather or fabrics.